Baoxu Shi created SPARK-2245:
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Summary: VertexRDD can not be materialized for checkpointing
Key: SPARK-2245
URL: https://issues.apache.org/jira/browse/SPARK-2245
Project: Spark
Issue Type: Bug
Components: GraphX
Reporter: Baoxu Shi
Seems one can not materialize VertexRDD by simply calling count method, which
is overridden by VertexRDD. But if you call RDD's count, it could materialize
it.
Is this a feature that designed to get the count without materialize VertexRDD?
If so, do you guys think it is necessary to add a materialize method to
VertexRDD?
By the way, does count() is the cheapest way to materialize a RDD? Or it just
cost the same resources like other actions?
The pull request is here:
https://github.com/apache/spark/pull/1177
Best,
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